Llibrary for the WiGo MPL3115A2, I2C Precision Altimeter sensor.
Dependents: KL25Z_Batt_Test WIGO_MPL3115A2 Multi-Sensor SPACEmk2 ... more
30/05/2013 Added and tested the data acquisition using Interrupt. Added code for Altimeter trigger Interrupt but not yet tested.
Very basic library. Under development. Need to add in order: 1. IRQ configuration. 2. FIFO mode configuration.
MPL3115A2.cpp@11:a5ce3ee460b6, 2020-07-10 (annotated)
- Committer:
- clemente
- Date:
- Fri Jul 10 14:58:19 2020 +0000
- Revision:
- 11:a5ce3ee460b6
- Parent:
- 10:82ac06669316
Added License
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
clemente | 11:a5ce3ee460b6 | 1 | /* MPL3115A2 I2C precision pressure sensor with altimetry Library |
clemente | 11:a5ce3ee460b6 | 2 | * |
clemente | 11:a5ce3ee460b6 | 3 | * @author: Clemente di Caprio |
clemente | 11:a5ce3ee460b6 | 4 | * @date: September 24, 2013 |
clemente | 11:a5ce3ee460b6 | 5 | * @license: Apache License, Version 2.0 |
clemente | 11:a5ce3ee460b6 | 6 | * |
clemente | 11:a5ce3ee460b6 | 7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
clemente | 11:a5ce3ee460b6 | 8 | * you may not use this file except in compliance with the License. |
clemente | 11:a5ce3ee460b6 | 9 | * You may obtain a copy of the License at |
clemente | 11:a5ce3ee460b6 | 10 | * |
clemente | 11:a5ce3ee460b6 | 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
clemente | 11:a5ce3ee460b6 | 12 | * |
clemente | 11:a5ce3ee460b6 | 13 | * Unless required by applicable law or agreed to in writing, software |
clemente | 11:a5ce3ee460b6 | 14 | * distributed under the License is distributed on an "AS IS" BASIS, |
clemente | 11:a5ce3ee460b6 | 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
clemente | 11:a5ce3ee460b6 | 16 | * See the License for the specific language governing permissions and |
clemente | 11:a5ce3ee460b6 | 17 | * limitations under the License. |
clemente | 11:a5ce3ee460b6 | 18 | */ |
clemente | 11:a5ce3ee460b6 | 19 | |
clemente | 0:cfecfabc5e23 | 20 | #include "MPL3115A2.h" |
clemente | 0:cfecfabc5e23 | 21 | |
clemente | 2:a2fcfb7ff611 | 22 | #define REG_WHO_AM_I 0x0C // return 0xC4 by default |
clemente | 0:cfecfabc5e23 | 23 | #define REG_STATUS 0x00 |
clemente | 0:cfecfabc5e23 | 24 | #define REG_CTRL_REG_1 0x26 |
clemente | 4:fdf14a259af8 | 25 | #define REG_CTRL_REG_3 0x28 |
clemente | 2:a2fcfb7ff611 | 26 | #define REG_CTRL_REG_4 0x29 |
clemente | 2:a2fcfb7ff611 | 27 | #define REG_CTRL_REG_5 0x2A |
clemente | 0:cfecfabc5e23 | 28 | #define REG_PRESSURE_MSB 0x01 // 3 byte pressure data |
clemente | 0:cfecfabc5e23 | 29 | #define REG_ALTIMETER_MSB 0x01 // 3 byte altimeter data |
clemente | 0:cfecfabc5e23 | 30 | #define REG_TEMP_MSB 0x04 // 2 byte temperature data |
clemente | 0:cfecfabc5e23 | 31 | #define REG_PT_DATA_CFG 0x13 |
clemente | 3:a2f1752add9a | 32 | #define REG_P_TGT_MSB 0x16 |
clemente | 3:a2f1752add9a | 33 | #define REG_P_WND_MSB 0x19 |
clemente | 9:75a5960adf5c | 34 | #define REG_OFF_P 0x2b |
clemente | 9:75a5960adf5c | 35 | #define REG_OFF_T 0x2c |
clemente | 9:75a5960adf5c | 36 | #define REG_OFF_H 0x2d |
clemente | 9:75a5960adf5c | 37 | #define REG_PRES_MIN_MSB 0x1c |
clemente | 9:75a5960adf5c | 38 | #define REG_ALTI_MIN_MSB 0x1c |
clemente | 9:75a5960adf5c | 39 | #define REG_TEMP_MIN_MSB 0x1f |
clemente | 9:75a5960adf5c | 40 | #define REG_PRES_MAX_MSB 0x21 |
clemente | 9:75a5960adf5c | 41 | #define REG_ALTI_MAX_MSB 0x21 |
clemente | 9:75a5960adf5c | 42 | #define REG_TEMP_MAX_MSB 0x24 |
clemente | 10:82ac06669316 | 43 | #define REG_PRES_DELTA_MSB 0x07 |
clemente | 10:82ac06669316 | 44 | #define REG_ALTI_DELTA_MSB 0x07 |
clemente | 10:82ac06669316 | 45 | #define REG_TEMP_DELTA_MSB 0x0a |
clemente | 10:82ac06669316 | 46 | |
clemente | 0:cfecfabc5e23 | 47 | |
clemente | 0:cfecfabc5e23 | 48 | #define UINT14_MAX 16383 |
clemente | 0:cfecfabc5e23 | 49 | |
clemente | 6:03c24251e500 | 50 | // Status flag for data ready. |
clemente | 6:03c24251e500 | 51 | #define PTDR_STATUS 0x03 // Pressure Altitude and Temperature ready |
clemente | 6:03c24251e500 | 52 | #define PDR_STATUS 0x02 // Pressure and Altitude data ready |
clemente | 6:03c24251e500 | 53 | #define TDR_STATUS 0x01 // Temperature data ready |
clemente | 6:03c24251e500 | 54 | |
clemente | 3:a2f1752add9a | 55 | /** Interrupt schema |
clemente | 3:a2f1752add9a | 56 | * |
clemente | 3:a2f1752add9a | 57 | * :: The Altitude Trigger use the IRQ1. |
clemente | 3:a2f1752add9a | 58 | * |
clemente | 7:59e9ba115d0a | 59 | * Altitude Trigger -- MPL3115A2_Int1.fall --- AltitudeTrg_IRQ --- MPL3115A2_usr1_fptr |
clemente | 3:a2f1752add9a | 60 | * |
clemente | 3:a2f1752add9a | 61 | * |
clemente | 3:a2f1752add9a | 62 | * :: The Data ready use the IRQ2. |
clemente | 3:a2f1752add9a | 63 | * |
clemente | 7:59e9ba115d0a | 64 | * Data Ready -- MPL3115A2_Int2.fall --- DataReady_IRQ --- MPL3115A2_usr2_fptr |
clemente | 3:a2f1752add9a | 65 | * |
clemente | 3:a2f1752add9a | 66 | */ |
clemente | 7:59e9ba115d0a | 67 | void (*MPL3115A2_usr2_fptr)(void); // Pointers to user function called after |
clemente | 7:59e9ba115d0a | 68 | void (*MPL3115A2_usr1_fptr)(void); // IRQ assertion. |
clemente | 2:a2fcfb7ff611 | 69 | |
clemente | 2:a2fcfb7ff611 | 70 | // |
clemente | 2:a2fcfb7ff611 | 71 | InterruptIn MPL3115A2_Int1( PTD4); // INT1 |
clemente | 2:a2fcfb7ff611 | 72 | InterruptIn MPL3115A2_Int2( PTA12); // INT2 |
clemente | 2:a2fcfb7ff611 | 73 | |
clemente | 0:cfecfabc5e23 | 74 | MPL3115A2::MPL3115A2(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr) { |
clemente | 9:75a5960adf5c | 75 | unsigned char data[6]; |
clemente | 9:75a5960adf5c | 76 | |
clemente | 0:cfecfabc5e23 | 77 | MPL3115A2_mode = BAROMETRIC_MODE; |
clemente | 0:cfecfabc5e23 | 78 | MPL3115A2_oversampling = OVERSAMPLE_RATIO_1; |
clemente | 4:fdf14a259af8 | 79 | // |
clemente | 7:59e9ba115d0a | 80 | MPL3115A2_usr1_fptr = NULL; |
clemente | 7:59e9ba115d0a | 81 | MPL3115A2_usr2_fptr = NULL; |
clemente | 4:fdf14a259af8 | 82 | MPL3115A2_Int1.fall( NULL); |
clemente | 4:fdf14a259af8 | 83 | MPL3115A2_Int2.fall( NULL); |
clemente | 8:89ed6aeb5dbb | 84 | |
clemente | 8:89ed6aeb5dbb | 85 | Reset(); |
clemente | 9:75a5960adf5c | 86 | |
clemente | 9:75a5960adf5c | 87 | data[0]=REG_PRES_MIN_MSB; |
clemente | 9:75a5960adf5c | 88 | data[1]=0;data[2]=0;data[3]=0;data[4]=0;data[5]=0; |
clemente | 9:75a5960adf5c | 89 | writeRegs( &data[0], 6); |
clemente | 0:cfecfabc5e23 | 90 | } |
clemente | 0:cfecfabc5e23 | 91 | |
clemente | 2:a2fcfb7ff611 | 92 | void MPL3115A2::Reset( void) |
clemente | 2:a2fcfb7ff611 | 93 | { |
clemente | 2:a2fcfb7ff611 | 94 | unsigned char t; |
clemente | 2:a2fcfb7ff611 | 95 | |
clemente | 2:a2fcfb7ff611 | 96 | // soft reset... |
clemente | 2:a2fcfb7ff611 | 97 | readRegs( REG_CTRL_REG_1, &t, 1); |
clemente | 2:a2fcfb7ff611 | 98 | unsigned char data[2] = { REG_CTRL_REG_1, t|0x04}; |
clemente | 2:a2fcfb7ff611 | 99 | writeRegs(data, 2); |
clemente | 2:a2fcfb7ff611 | 100 | wait( 0.1); |
clemente | 2:a2fcfb7ff611 | 101 | |
clemente | 2:a2fcfb7ff611 | 102 | } |
clemente | 2:a2fcfb7ff611 | 103 | |
clemente | 2:a2fcfb7ff611 | 104 | void MPL3115A2::DataReady( void(*fptr)(void), unsigned char OS) |
clemente | 2:a2fcfb7ff611 | 105 | { |
clemente | 2:a2fcfb7ff611 | 106 | unsigned char dt[5]; |
clemente | 2:a2fcfb7ff611 | 107 | unsigned char data[2]; |
clemente | 2:a2fcfb7ff611 | 108 | |
clemente | 4:fdf14a259af8 | 109 | // Soft Reset |
clemente | 2:a2fcfb7ff611 | 110 | Reset(); |
clemente | 2:a2fcfb7ff611 | 111 | |
clemente | 2:a2fcfb7ff611 | 112 | Standby(); |
clemente | 2:a2fcfb7ff611 | 113 | |
clemente | 4:fdf14a259af8 | 114 | // Clear all interrupts by reading the output registers. |
clemente | 2:a2fcfb7ff611 | 115 | readRegs( REG_ALTIMETER_MSB, &dt[0], 5); |
clemente | 2:a2fcfb7ff611 | 116 | getStatus(); |
clemente | 4:fdf14a259af8 | 117 | // Configure INT active low and pullup |
clemente | 4:fdf14a259af8 | 118 | data[0] = REG_CTRL_REG_3; |
clemente | 4:fdf14a259af8 | 119 | data[1] = 0x00; |
clemente | 4:fdf14a259af8 | 120 | writeRegs(data, 2); |
clemente | 2:a2fcfb7ff611 | 121 | // Enable Interrupt fot data ready |
clemente | 2:a2fcfb7ff611 | 122 | data[0] = REG_CTRL_REG_4; |
clemente | 2:a2fcfb7ff611 | 123 | data[1] = 0x80; |
clemente | 2:a2fcfb7ff611 | 124 | writeRegs(data, 2); |
clemente | 3:a2f1752add9a | 125 | // Configure Interrupt to route to INT2 |
clemente | 2:a2fcfb7ff611 | 126 | data[0] = REG_CTRL_REG_5; |
clemente | 2:a2fcfb7ff611 | 127 | data[1] = 0x00; |
clemente | 2:a2fcfb7ff611 | 128 | writeRegs(data, 2); |
clemente | 4:fdf14a259af8 | 129 | data[0] = REG_PT_DATA_CFG; |
clemente | 4:fdf14a259af8 | 130 | data[1] = 0x07; |
clemente | 4:fdf14a259af8 | 131 | writeRegs(data, 2); |
clemente | 2:a2fcfb7ff611 | 132 | |
clemente | 4:fdf14a259af8 | 133 | // Configure the OverSampling rate, Altimeter/Barometer mode and set the sensor Active |
clemente | 2:a2fcfb7ff611 | 134 | data[0] = REG_CTRL_REG_1; |
clemente | 4:fdf14a259af8 | 135 | data[1] = (OS<<3); |
clemente | 4:fdf14a259af8 | 136 | // |
clemente | 4:fdf14a259af8 | 137 | if (MPL3115A2_mode == BAROMETRIC_MODE) |
clemente | 4:fdf14a259af8 | 138 | data[1] &= 0x7F; |
clemente | 4:fdf14a259af8 | 139 | else |
clemente | 4:fdf14a259af8 | 140 | data[1] |= 0x80; |
clemente | 4:fdf14a259af8 | 141 | // |
clemente | 4:fdf14a259af8 | 142 | data[1] |= 0x01; |
clemente | 2:a2fcfb7ff611 | 143 | writeRegs(data, 2); |
clemente | 2:a2fcfb7ff611 | 144 | |
clemente | 7:59e9ba115d0a | 145 | MPL3115A2_usr2_fptr = fptr; |
clemente | 2:a2fcfb7ff611 | 146 | MPL3115A2_Int2.fall( this, &MPL3115A2::DataReady_IRQ); |
clemente | 2:a2fcfb7ff611 | 147 | |
clemente | 2:a2fcfb7ff611 | 148 | } |
clemente | 2:a2fcfb7ff611 | 149 | |
clemente | 2:a2fcfb7ff611 | 150 | void MPL3115A2::DataReady_IRQ( void) |
clemente | 2:a2fcfb7ff611 | 151 | { |
clemente | 2:a2fcfb7ff611 | 152 | // Clear the IRQ flag |
clemente | 2:a2fcfb7ff611 | 153 | getStatus(); |
clemente | 2:a2fcfb7ff611 | 154 | // Run the user supplied function |
clemente | 7:59e9ba115d0a | 155 | MPL3115A2_usr2_fptr(); |
clemente | 2:a2fcfb7ff611 | 156 | } |
clemente | 2:a2fcfb7ff611 | 157 | |
clemente | 3:a2f1752add9a | 158 | void MPL3115A2::AltitudeTrigger( void(*fptr)(void), unsigned short level) |
clemente | 3:a2f1752add9a | 159 | { |
clemente | 3:a2f1752add9a | 160 | unsigned char dt[5]; |
clemente | 3:a2f1752add9a | 161 | unsigned char data[2]; |
clemente | 3:a2f1752add9a | 162 | |
clemente | 3:a2f1752add9a | 163 | // Soft Reset |
clemente | 3:a2f1752add9a | 164 | Reset(); |
clemente | 3:a2f1752add9a | 165 | |
clemente | 3:a2f1752add9a | 166 | // The device is on standby |
clemente | 3:a2f1752add9a | 167 | Standby(); |
clemente | 3:a2f1752add9a | 168 | |
clemente | 3:a2f1752add9a | 169 | // Clear all interrupts by reading the output registers. |
clemente | 3:a2f1752add9a | 170 | readRegs( REG_ALTIMETER_MSB, &dt[0], 5); |
clemente | 3:a2f1752add9a | 171 | getStatus(); |
clemente | 3:a2f1752add9a | 172 | |
clemente | 3:a2f1752add9a | 173 | // Write Target and Window Values |
clemente | 4:fdf14a259af8 | 174 | dt[0] = REG_P_TGT_MSB; |
clemente | 4:fdf14a259af8 | 175 | dt[1] = (level>>8); |
clemente | 4:fdf14a259af8 | 176 | dt[2] = (level&0xFF); |
clemente | 4:fdf14a259af8 | 177 | writeRegs( dt, 3); |
clemente | 3:a2f1752add9a | 178 | |
clemente | 3:a2f1752add9a | 179 | // Window values are zero |
clemente | 4:fdf14a259af8 | 180 | dt[0] = REG_P_WND_MSB; |
clemente | 4:fdf14a259af8 | 181 | dt[1] = 0; |
clemente | 4:fdf14a259af8 | 182 | dt[2] = 0; |
clemente | 4:fdf14a259af8 | 183 | writeRegs( dt, 3); |
clemente | 3:a2f1752add9a | 184 | |
clemente | 3:a2f1752add9a | 185 | // Enable Pressure Threshold interrupt |
clemente | 3:a2f1752add9a | 186 | data[0] = REG_CTRL_REG_4; |
clemente | 3:a2f1752add9a | 187 | data[1] = 0x08; |
clemente | 3:a2f1752add9a | 188 | writeRegs( data, 2); |
clemente | 3:a2f1752add9a | 189 | // Interrupt is routed to INT1 |
clemente | 3:a2f1752add9a | 190 | data[0] = REG_CTRL_REG_5; |
clemente | 3:a2f1752add9a | 191 | data[1] = 0x08; |
clemente | 3:a2f1752add9a | 192 | writeRegs( data, 2); |
clemente | 4:fdf14a259af8 | 193 | data[0] = REG_PT_DATA_CFG; |
clemente | 4:fdf14a259af8 | 194 | data[1] = 0x07; |
clemente | 4:fdf14a259af8 | 195 | writeRegs(data, 2); |
clemente | 4:fdf14a259af8 | 196 | // Configure the OverSampling rate, Altimeter mode and set the sensor Active |
clemente | 4:fdf14a259af8 | 197 | data[0] = REG_CTRL_REG_1; |
clemente | 4:fdf14a259af8 | 198 | data[1] = 0x81 | (MPL3115A2_oversampling<<3); |
clemente | 4:fdf14a259af8 | 199 | writeRegs(data, 2); |
clemente | 3:a2f1752add9a | 200 | |
clemente | 7:59e9ba115d0a | 201 | MPL3115A2_usr1_fptr = fptr; |
clemente | 3:a2f1752add9a | 202 | MPL3115A2_Int1.fall( this, &MPL3115A2::AltitudeTrg_IRQ); |
clemente | 3:a2f1752add9a | 203 | |
clemente | 3:a2f1752add9a | 204 | } |
clemente | 3:a2f1752add9a | 205 | |
clemente | 3:a2f1752add9a | 206 | void MPL3115A2::AltitudeTrg_IRQ( void) |
clemente | 3:a2f1752add9a | 207 | { |
clemente | 3:a2f1752add9a | 208 | // Clear the IRQ flag |
clemente | 3:a2f1752add9a | 209 | getStatus(); |
clemente | 3:a2f1752add9a | 210 | // Run the user supplied function |
clemente | 7:59e9ba115d0a | 211 | MPL3115A2_usr1_fptr(); |
clemente | 3:a2f1752add9a | 212 | |
clemente | 3:a2f1752add9a | 213 | } |
clemente | 3:a2f1752add9a | 214 | |
clemente | 0:cfecfabc5e23 | 215 | void MPL3115A2::Barometric_Mode( void) |
clemente | 0:cfecfabc5e23 | 216 | { |
clemente | 0:cfecfabc5e23 | 217 | unsigned char t; |
clemente | 2:a2fcfb7ff611 | 218 | unsigned char data[2]; |
clemente | 0:cfecfabc5e23 | 219 | |
clemente | 0:cfecfabc5e23 | 220 | Standby(); |
clemente | 0:cfecfabc5e23 | 221 | |
clemente | 0:cfecfabc5e23 | 222 | // soft reset... |
clemente | 2:a2fcfb7ff611 | 223 | Reset(); |
clemente | 2:a2fcfb7ff611 | 224 | |
clemente | 0:cfecfabc5e23 | 225 | Standby(); |
clemente | 0:cfecfabc5e23 | 226 | readRegs( REG_CTRL_REG_1, &t, 1); |
clemente | 0:cfecfabc5e23 | 227 | |
clemente | 2:a2fcfb7ff611 | 228 | // Set the Barometric mode |
clemente | 0:cfecfabc5e23 | 229 | data[0] = REG_CTRL_REG_1; |
clemente | 0:cfecfabc5e23 | 230 | data[1] = t&0x7F; |
clemente | 0:cfecfabc5e23 | 231 | writeRegs(data, 2); |
clemente | 0:cfecfabc5e23 | 232 | |
clemente | 0:cfecfabc5e23 | 233 | data[0] = REG_PT_DATA_CFG; |
clemente | 0:cfecfabc5e23 | 234 | data[1] = 0x07; |
clemente | 0:cfecfabc5e23 | 235 | writeRegs(data, 2); |
clemente | 0:cfecfabc5e23 | 236 | |
clemente | 0:cfecfabc5e23 | 237 | Oversample_Ratio( MPL3115A2_oversampling); |
clemente | 0:cfecfabc5e23 | 238 | |
clemente | 0:cfecfabc5e23 | 239 | Active(); |
clemente | 0:cfecfabc5e23 | 240 | |
clemente | 0:cfecfabc5e23 | 241 | MPL3115A2_mode = BAROMETRIC_MODE; |
clemente | 0:cfecfabc5e23 | 242 | } |
clemente | 0:cfecfabc5e23 | 243 | |
clemente | 0:cfecfabc5e23 | 244 | void MPL3115A2::Altimeter_Mode( void) |
clemente | 0:cfecfabc5e23 | 245 | { |
clemente | 0:cfecfabc5e23 | 246 | unsigned char t; |
clemente | 2:a2fcfb7ff611 | 247 | unsigned char data[2]; |
clemente | 2:a2fcfb7ff611 | 248 | |
clemente | 0:cfecfabc5e23 | 249 | Standby(); |
clemente | 0:cfecfabc5e23 | 250 | |
clemente | 0:cfecfabc5e23 | 251 | // soft reset... |
clemente | 2:a2fcfb7ff611 | 252 | Reset(); |
clemente | 0:cfecfabc5e23 | 253 | |
clemente | 0:cfecfabc5e23 | 254 | Standby(); |
clemente | 0:cfecfabc5e23 | 255 | readRegs( REG_CTRL_REG_1, &t, 1); |
clemente | 0:cfecfabc5e23 | 256 | |
clemente | 0:cfecfabc5e23 | 257 | data[0] = REG_CTRL_REG_1; |
clemente | 0:cfecfabc5e23 | 258 | data[1] = t|0x80; |
clemente | 0:cfecfabc5e23 | 259 | writeRegs(data, 2); |
clemente | 0:cfecfabc5e23 | 260 | |
clemente | 0:cfecfabc5e23 | 261 | data[0] = REG_PT_DATA_CFG; |
clemente | 0:cfecfabc5e23 | 262 | data[1] = 0x07; |
clemente | 0:cfecfabc5e23 | 263 | writeRegs(data, 2); |
clemente | 0:cfecfabc5e23 | 264 | |
clemente | 0:cfecfabc5e23 | 265 | Oversample_Ratio( MPL3115A2_oversampling); |
clemente | 0:cfecfabc5e23 | 266 | |
clemente | 0:cfecfabc5e23 | 267 | Active(); |
clemente | 0:cfecfabc5e23 | 268 | |
clemente | 0:cfecfabc5e23 | 269 | MPL3115A2_mode = ALTIMETER_MODE; |
clemente | 0:cfecfabc5e23 | 270 | } |
clemente | 0:cfecfabc5e23 | 271 | |
clemente | 0:cfecfabc5e23 | 272 | void MPL3115A2::Oversample_Ratio( unsigned int ratio) |
clemente | 0:cfecfabc5e23 | 273 | { |
clemente | 0:cfecfabc5e23 | 274 | unsigned char t; |
clemente | 0:cfecfabc5e23 | 275 | |
clemente | 0:cfecfabc5e23 | 276 | Standby(); |
clemente | 0:cfecfabc5e23 | 277 | readRegs( REG_CTRL_REG_1, &t, 1); |
clemente | 0:cfecfabc5e23 | 278 | |
clemente | 0:cfecfabc5e23 | 279 | t = t & 0xE7; |
clemente | 0:cfecfabc5e23 | 280 | t = t | ( ratio<<3); |
clemente | 0:cfecfabc5e23 | 281 | |
clemente | 0:cfecfabc5e23 | 282 | unsigned char data[2] = { REG_CTRL_REG_1, t}; |
clemente | 0:cfecfabc5e23 | 283 | writeRegs(data, 2); |
clemente | 0:cfecfabc5e23 | 284 | |
clemente | 0:cfecfabc5e23 | 285 | Active(); |
clemente | 0:cfecfabc5e23 | 286 | |
clemente | 0:cfecfabc5e23 | 287 | MPL3115A2_oversampling = ratio; |
clemente | 0:cfecfabc5e23 | 288 | } |
clemente | 0:cfecfabc5e23 | 289 | |
clemente | 0:cfecfabc5e23 | 290 | |
clemente | 0:cfecfabc5e23 | 291 | void MPL3115A2::Active( void) |
clemente | 0:cfecfabc5e23 | 292 | { |
clemente | 0:cfecfabc5e23 | 293 | unsigned char t; |
clemente | 0:cfecfabc5e23 | 294 | |
clemente | 0:cfecfabc5e23 | 295 | // Activate the peripheral |
clemente | 0:cfecfabc5e23 | 296 | readRegs(REG_CTRL_REG_1, &t, 1); |
clemente | 0:cfecfabc5e23 | 297 | unsigned char data[2] = {REG_CTRL_REG_1, t|0x01}; |
clemente | 0:cfecfabc5e23 | 298 | writeRegs(data, 2); |
clemente | 0:cfecfabc5e23 | 299 | } |
clemente | 0:cfecfabc5e23 | 300 | |
clemente | 0:cfecfabc5e23 | 301 | void MPL3115A2::Standby( void) |
clemente | 0:cfecfabc5e23 | 302 | { |
clemente | 0:cfecfabc5e23 | 303 | unsigned char t; |
clemente | 0:cfecfabc5e23 | 304 | |
clemente | 0:cfecfabc5e23 | 305 | // Standby |
clemente | 0:cfecfabc5e23 | 306 | readRegs(REG_CTRL_REG_1, &t, 1); |
clemente | 0:cfecfabc5e23 | 307 | unsigned char data[2] = {REG_CTRL_REG_1, t&0xFE}; |
clemente | 0:cfecfabc5e23 | 308 | writeRegs(data, 2); |
clemente | 0:cfecfabc5e23 | 309 | } |
clemente | 0:cfecfabc5e23 | 310 | |
clemente | 0:cfecfabc5e23 | 311 | unsigned char MPL3115A2::getDeviceID() { |
clemente | 0:cfecfabc5e23 | 312 | unsigned char device_id = 0; |
clemente | 0:cfecfabc5e23 | 313 | readRegs(REG_WHO_AM_I, &device_id, 1); |
clemente | 0:cfecfabc5e23 | 314 | return device_id; |
clemente | 0:cfecfabc5e23 | 315 | } |
clemente | 0:cfecfabc5e23 | 316 | |
clemente | 0:cfecfabc5e23 | 317 | unsigned int MPL3115A2::isDataAvailable( void) |
clemente | 0:cfecfabc5e23 | 318 | { |
clemente | 0:cfecfabc5e23 | 319 | unsigned char status; |
clemente | 0:cfecfabc5e23 | 320 | |
clemente | 0:cfecfabc5e23 | 321 | readRegs( REG_STATUS, &status, 1); |
clemente | 6:03c24251e500 | 322 | |
clemente | 6:03c24251e500 | 323 | return ((status>>1)); |
clemente | 0:cfecfabc5e23 | 324 | |
clemente | 0:cfecfabc5e23 | 325 | } |
clemente | 0:cfecfabc5e23 | 326 | |
clemente | 0:cfecfabc5e23 | 327 | unsigned char MPL3115A2::getStatus( void) |
clemente | 0:cfecfabc5e23 | 328 | { |
clemente | 0:cfecfabc5e23 | 329 | unsigned char status; |
clemente | 0:cfecfabc5e23 | 330 | |
clemente | 0:cfecfabc5e23 | 331 | readRegs( REG_STATUS, &status, 1); |
clemente | 0:cfecfabc5e23 | 332 | return status; |
clemente | 0:cfecfabc5e23 | 333 | } |
clemente | 0:cfecfabc5e23 | 334 | |
clemente | 6:03c24251e500 | 335 | unsigned int MPL3115A2::getAllData( float *f) |
clemente | 0:cfecfabc5e23 | 336 | { |
clemente | 6:03c24251e500 | 337 | if ( isDataAvailable() & PTDR_STATUS) { |
clemente | 6:03c24251e500 | 338 | if ( MPL3115A2_mode == ALTIMETER_MODE) { |
clemente | 9:75a5960adf5c | 339 | f[0] = getAltimeter( REG_ALTIMETER_MSB); |
clemente | 6:03c24251e500 | 340 | } else { |
clemente | 9:75a5960adf5c | 341 | f[0] = getPressure( REG_PRESSURE_MSB); |
clemente | 6:03c24251e500 | 342 | } |
clemente | 6:03c24251e500 | 343 | |
clemente | 9:75a5960adf5c | 344 | f[1] = getTemperature( REG_TEMP_MSB); |
clemente | 6:03c24251e500 | 345 | // |
clemente | 6:03c24251e500 | 346 | return 1; |
clemente | 6:03c24251e500 | 347 | } else |
clemente | 6:03c24251e500 | 348 | return 0; |
clemente | 0:cfecfabc5e23 | 349 | } |
clemente | 0:cfecfabc5e23 | 350 | |
clemente | 10:82ac06669316 | 351 | unsigned int MPL3115A2::getAllData( float *f, float *d) |
clemente | 10:82ac06669316 | 352 | { |
clemente | 10:82ac06669316 | 353 | if ( isDataAvailable() & PTDR_STATUS) { |
clemente | 10:82ac06669316 | 354 | if ( MPL3115A2_mode == ALTIMETER_MODE) { |
clemente | 10:82ac06669316 | 355 | f[0] = getAltimeter(); |
clemente | 10:82ac06669316 | 356 | d[0] = getAltimeter( REG_ALTI_DELTA_MSB); |
clemente | 10:82ac06669316 | 357 | } else { |
clemente | 10:82ac06669316 | 358 | f[0] = getPressure(); |
clemente | 10:82ac06669316 | 359 | d[0] = getPressure( REG_PRES_DELTA_MSB); |
clemente | 10:82ac06669316 | 360 | } |
clemente | 10:82ac06669316 | 361 | |
clemente | 10:82ac06669316 | 362 | f[1] = getTemperature(); |
clemente | 10:82ac06669316 | 363 | d[1] = getTemperature( REG_TEMP_DELTA_MSB); |
clemente | 10:82ac06669316 | 364 | // |
clemente | 10:82ac06669316 | 365 | return 1; |
clemente | 10:82ac06669316 | 366 | } else |
clemente | 10:82ac06669316 | 367 | return 0; |
clemente | 10:82ac06669316 | 368 | } |
clemente | 10:82ac06669316 | 369 | |
clemente | 9:75a5960adf5c | 370 | void MPL3115A2::getAllMaximumData( float *f) |
clemente | 9:75a5960adf5c | 371 | { |
clemente | 9:75a5960adf5c | 372 | if ( MPL3115A2_mode == ALTIMETER_MODE) { |
clemente | 9:75a5960adf5c | 373 | f[0] = getAltimeter( REG_ALTI_MAX_MSB); |
clemente | 9:75a5960adf5c | 374 | } else { |
clemente | 9:75a5960adf5c | 375 | f[0] = getPressure( REG_PRES_MAX_MSB); |
clemente | 9:75a5960adf5c | 376 | } |
clemente | 9:75a5960adf5c | 377 | |
clemente | 9:75a5960adf5c | 378 | f[1] = getTemperature( REG_TEMP_MAX_MSB); |
clemente | 9:75a5960adf5c | 379 | } |
clemente | 9:75a5960adf5c | 380 | |
clemente | 9:75a5960adf5c | 381 | void MPL3115A2::getAllMinimumData( float *f) |
clemente | 9:75a5960adf5c | 382 | { |
clemente | 9:75a5960adf5c | 383 | if ( MPL3115A2_mode == ALTIMETER_MODE) { |
clemente | 9:75a5960adf5c | 384 | f[0] = getAltimeter( REG_ALTI_MIN_MSB); |
clemente | 9:75a5960adf5c | 385 | } else { |
clemente | 9:75a5960adf5c | 386 | f[0] = getPressure( REG_PRES_MIN_MSB); |
clemente | 9:75a5960adf5c | 387 | } |
clemente | 9:75a5960adf5c | 388 | |
clemente | 9:75a5960adf5c | 389 | f[1] = getTemperature( REG_TEMP_MIN_MSB); |
clemente | 9:75a5960adf5c | 390 | } |
clemente | 9:75a5960adf5c | 391 | |
clemente | 0:cfecfabc5e23 | 392 | float MPL3115A2::getAltimeter( void) |
clemente | 0:cfecfabc5e23 | 393 | { |
clemente | 9:75a5960adf5c | 394 | float a; |
clemente | 9:75a5960adf5c | 395 | |
clemente | 9:75a5960adf5c | 396 | a = getAltimeter( REG_ALTIMETER_MSB); |
clemente | 9:75a5960adf5c | 397 | return a; |
clemente | 9:75a5960adf5c | 398 | } |
clemente | 9:75a5960adf5c | 399 | |
clemente | 9:75a5960adf5c | 400 | float MPL3115A2::getAltimeter( unsigned char reg) |
clemente | 9:75a5960adf5c | 401 | { |
clemente | 0:cfecfabc5e23 | 402 | unsigned char dt[3]; |
clemente | 0:cfecfabc5e23 | 403 | unsigned short altm; |
clemente | 10:82ac06669316 | 404 | short tmp; |
clemente | 0:cfecfabc5e23 | 405 | float faltm; |
clemente | 0:cfecfabc5e23 | 406 | |
clemente | 0:cfecfabc5e23 | 407 | /* |
clemente | 5:9edec5ee8bf4 | 408 | * dt[0] = Bits 12-19 of 20-bit real-time Altitude sample. (b7-b0) |
clemente | 5:9edec5ee8bf4 | 409 | * dt[1] = Bits 4-11 of 20-bit real-time Altitude sample. (b7-b0) |
clemente | 5:9edec5ee8bf4 | 410 | * dt[2] = Bits 0-3 of 20-bit real-time Altitude sample (b7-b4) |
clemente | 0:cfecfabc5e23 | 411 | */ |
clemente | 9:75a5960adf5c | 412 | readRegs( reg, &dt[0], 3); |
clemente | 0:cfecfabc5e23 | 413 | altm = (dt[0]<<8) | dt[1]; |
clemente | 0:cfecfabc5e23 | 414 | // |
clemente | 0:cfecfabc5e23 | 415 | if ( dt[0] > 0x7F) { |
clemente | 10:82ac06669316 | 416 | // negative number |
clemente | 10:82ac06669316 | 417 | tmp = ~altm + 1; |
clemente | 10:82ac06669316 | 418 | faltm = (float)tmp * -1.0f; |
clemente | 0:cfecfabc5e23 | 419 | } else { |
clemente | 0:cfecfabc5e23 | 420 | faltm = (float)altm * 1.0f; |
clemente | 0:cfecfabc5e23 | 421 | } |
clemente | 0:cfecfabc5e23 | 422 | // |
clemente | 0:cfecfabc5e23 | 423 | faltm = faltm+((float)(dt[2]>>4) * 0.0625f); |
clemente | 0:cfecfabc5e23 | 424 | return faltm; |
clemente | 0:cfecfabc5e23 | 425 | } |
clemente | 0:cfecfabc5e23 | 426 | |
clemente | 0:cfecfabc5e23 | 427 | float MPL3115A2::getPressure( void) |
clemente | 0:cfecfabc5e23 | 428 | { |
clemente | 9:75a5960adf5c | 429 | float a; |
clemente | 9:75a5960adf5c | 430 | |
clemente | 9:75a5960adf5c | 431 | a = getPressure( REG_PRESSURE_MSB); |
clemente | 9:75a5960adf5c | 432 | return a; |
clemente | 9:75a5960adf5c | 433 | } |
clemente | 9:75a5960adf5c | 434 | |
clemente | 9:75a5960adf5c | 435 | float MPL3115A2::getPressure( unsigned char reg) |
clemente | 9:75a5960adf5c | 436 | { |
clemente | 0:cfecfabc5e23 | 437 | unsigned char dt[3]; |
clemente | 0:cfecfabc5e23 | 438 | unsigned int prs; |
clemente | 10:82ac06669316 | 439 | int tmp; |
clemente | 0:cfecfabc5e23 | 440 | float fprs; |
clemente | 0:cfecfabc5e23 | 441 | |
clemente | 0:cfecfabc5e23 | 442 | /* |
clemente | 0:cfecfabc5e23 | 443 | * dt[0] = Bits 12-19 of 20-bit real-time Pressure sample. (b7-b0) |
clemente | 0:cfecfabc5e23 | 444 | * dt[1] = Bits 4-11 of 20-bit real-time Pressure sample. (b7-b0) |
clemente | 0:cfecfabc5e23 | 445 | * dt[2] = Bits 0-3 of 20-bit real-time Pressure sample (b7-b4) |
clemente | 0:cfecfabc5e23 | 446 | */ |
clemente | 9:75a5960adf5c | 447 | readRegs( reg, &dt[0], 3); |
clemente | 10:82ac06669316 | 448 | prs = ((dt[0]<<10) | (dt[1]<<2) | (dt[2]>>6)); |
clemente | 0:cfecfabc5e23 | 449 | // |
clemente | 10:82ac06669316 | 450 | if ( dt[0] > 0x7f) { |
clemente | 10:82ac06669316 | 451 | // negative number |
clemente | 10:82ac06669316 | 452 | if ( dt[0] & 0x80) |
clemente | 10:82ac06669316 | 453 | prs |= 0xFFFC0000; // set at 1 the bits to complete the word len |
clemente | 10:82ac06669316 | 454 | else |
clemente | 10:82ac06669316 | 455 | prs |= 0xFFFE0000; |
clemente | 10:82ac06669316 | 456 | tmp = ~prs + 1; // make the complemets. At this point all the bits are inverted. |
clemente | 10:82ac06669316 | 457 | fprs = (float)tmp * -1.0f; // set the signe.. |
clemente | 10:82ac06669316 | 458 | } else { |
clemente | 10:82ac06669316 | 459 | fprs = (float)prs * 1.0f; |
clemente | 10:82ac06669316 | 460 | } |
clemente | 10:82ac06669316 | 461 | |
clemente | 10:82ac06669316 | 462 | if ( dt[2] & 0x10) // I did some experiment to set the fractional parte. |
clemente | 10:82ac06669316 | 463 | fprs += 0.25f; // ** Warning: the DS is wrong! ** |
clemente | 0:cfecfabc5e23 | 464 | if ( dt[2] & 0x20) |
clemente | 0:cfecfabc5e23 | 465 | fprs += 0.5f; |
clemente | 10:82ac06669316 | 466 | |
clemente | 0:cfecfabc5e23 | 467 | return fprs; |
clemente | 0:cfecfabc5e23 | 468 | } |
clemente | 0:cfecfabc5e23 | 469 | |
clemente | 9:75a5960adf5c | 470 | float MPL3115A2::getTemperature( void) |
clemente | 9:75a5960adf5c | 471 | { |
clemente | 9:75a5960adf5c | 472 | float a; |
clemente | 9:75a5960adf5c | 473 | |
clemente | 9:75a5960adf5c | 474 | a = getTemperature( REG_TEMP_MSB); |
clemente | 9:75a5960adf5c | 475 | return a; |
clemente | 9:75a5960adf5c | 476 | } |
clemente | 0:cfecfabc5e23 | 477 | |
clemente | 9:75a5960adf5c | 478 | float MPL3115A2::getTemperature( unsigned char reg) |
clemente | 0:cfecfabc5e23 | 479 | { |
clemente | 0:cfecfabc5e23 | 480 | unsigned char dt[2]; |
clemente | 0:cfecfabc5e23 | 481 | unsigned short temp; |
clemente | 0:cfecfabc5e23 | 482 | float ftemp; |
clemente | 0:cfecfabc5e23 | 483 | |
clemente | 0:cfecfabc5e23 | 484 | /* |
clemente | 0:cfecfabc5e23 | 485 | * dt[0] = Bits 4-11 of 16-bit real-time temperature sample. (b7-b0) |
clemente | 0:cfecfabc5e23 | 486 | * dt[1] = Bits 0-3 of 16-bit real-time temperature sample. (b7-b4) |
clemente | 0:cfecfabc5e23 | 487 | */ |
clemente | 9:75a5960adf5c | 488 | readRegs( reg, &dt[0], 2); |
clemente | 0:cfecfabc5e23 | 489 | temp = dt[0]; |
clemente | 0:cfecfabc5e23 | 490 | // |
clemente | 0:cfecfabc5e23 | 491 | if ( dt[0] > 0x7F) { |
clemente | 0:cfecfabc5e23 | 492 | temp = ~temp + 1; |
clemente | 0:cfecfabc5e23 | 493 | ftemp = (float)temp * -1.0f; |
clemente | 0:cfecfabc5e23 | 494 | } else { |
clemente | 0:cfecfabc5e23 | 495 | ftemp = (float)temp * 1.0f; |
clemente | 0:cfecfabc5e23 | 496 | } |
clemente | 0:cfecfabc5e23 | 497 | // |
clemente | 0:cfecfabc5e23 | 498 | ftemp = ftemp+((float)(dt[1]>>4) * 0.0625f); |
clemente | 0:cfecfabc5e23 | 499 | return ftemp; |
clemente | 0:cfecfabc5e23 | 500 | |
clemente | 0:cfecfabc5e23 | 501 | } |
clemente | 0:cfecfabc5e23 | 502 | |
clemente | 9:75a5960adf5c | 503 | |
clemente | 5:9edec5ee8bf4 | 504 | unsigned int MPL3115A2::getAllDataRaw( unsigned char *dt) |
clemente | 5:9edec5ee8bf4 | 505 | { |
clemente | 6:03c24251e500 | 506 | // Check for Press/Alti and Temp value ready |
clemente | 6:03c24251e500 | 507 | if ( isDataAvailable() & PTDR_STATUS) { |
clemente | 6:03c24251e500 | 508 | if ( MPL3115A2_mode == ALTIMETER_MODE) { |
clemente | 6:03c24251e500 | 509 | getAltimeterRaw( &dt[0]); // 3 bytes |
clemente | 6:03c24251e500 | 510 | } else { |
clemente | 6:03c24251e500 | 511 | getPressureRaw( &dt[0]); // 3 bytes |
clemente | 6:03c24251e500 | 512 | } |
clemente | 6:03c24251e500 | 513 | |
clemente | 6:03c24251e500 | 514 | getTemperatureRaw( &dt[3]); // 2 bytes |
clemente | 6:03c24251e500 | 515 | |
clemente | 6:03c24251e500 | 516 | return 1; |
clemente | 5:9edec5ee8bf4 | 517 | } else { |
clemente | 6:03c24251e500 | 518 | return 0; |
clemente | 5:9edec5ee8bf4 | 519 | } |
clemente | 5:9edec5ee8bf4 | 520 | } |
clemente | 5:9edec5ee8bf4 | 521 | |
clemente | 5:9edec5ee8bf4 | 522 | unsigned int MPL3115A2::getAltimeterRaw( unsigned char *dt) |
clemente | 5:9edec5ee8bf4 | 523 | { |
clemente | 5:9edec5ee8bf4 | 524 | |
clemente | 5:9edec5ee8bf4 | 525 | /* |
clemente | 5:9edec5ee8bf4 | 526 | * dt[0] = Bits 12-19 of 20-bit real-time Pressure sample. (b7-b0) |
clemente | 5:9edec5ee8bf4 | 527 | * dt[1] = Bits 4-11 of 20-bit real-time Pressure sample. (b7-b0) |
clemente | 5:9edec5ee8bf4 | 528 | * dt[2] = Bits 0-3 of 20-bit real-time Pressure sample (b7-b4) |
clemente | 5:9edec5ee8bf4 | 529 | */ |
clemente | 6:03c24251e500 | 530 | |
clemente | 6:03c24251e500 | 531 | // Check for Press/Alti value ready |
clemente | 6:03c24251e500 | 532 | if ( isDataAvailable() & PDR_STATUS) { |
clemente | 6:03c24251e500 | 533 | readRegs( REG_ALTIMETER_MSB, &dt[0], 3); |
clemente | 6:03c24251e500 | 534 | return 1; |
clemente | 6:03c24251e500 | 535 | } else |
clemente | 6:03c24251e500 | 536 | return 0; |
clemente | 5:9edec5ee8bf4 | 537 | } |
clemente | 5:9edec5ee8bf4 | 538 | |
clemente | 5:9edec5ee8bf4 | 539 | unsigned int MPL3115A2::getPressureRaw( unsigned char *dt) |
clemente | 5:9edec5ee8bf4 | 540 | { |
clemente | 5:9edec5ee8bf4 | 541 | |
clemente | 5:9edec5ee8bf4 | 542 | /* |
clemente | 5:9edec5ee8bf4 | 543 | * dt[0] = Bits 12-19 of 20-bit real-time Pressure sample. (b7-b0) |
clemente | 5:9edec5ee8bf4 | 544 | * dt[1] = Bits 4-11 of 20-bit real-time Pressure sample. (b7-b0) |
clemente | 5:9edec5ee8bf4 | 545 | * dt[2] = Bits 0-3 of 20-bit real-time Pressure sample (b7-b4) |
clemente | 5:9edec5ee8bf4 | 546 | */ |
clemente | 6:03c24251e500 | 547 | |
clemente | 6:03c24251e500 | 548 | // Check for Press/Alti value ready |
clemente | 6:03c24251e500 | 549 | if ( isDataAvailable() & PDR_STATUS) { |
clemente | 6:03c24251e500 | 550 | readRegs( REG_PRESSURE_MSB, &dt[0], 3); |
clemente | 6:03c24251e500 | 551 | return 1; |
clemente | 6:03c24251e500 | 552 | } else |
clemente | 6:03c24251e500 | 553 | return 0; |
clemente | 6:03c24251e500 | 554 | |
clemente | 5:9edec5ee8bf4 | 555 | } |
clemente | 5:9edec5ee8bf4 | 556 | |
clemente | 5:9edec5ee8bf4 | 557 | unsigned int MPL3115A2::getTemperatureRaw( unsigned char *dt) |
clemente | 5:9edec5ee8bf4 | 558 | { |
clemente | 5:9edec5ee8bf4 | 559 | |
clemente | 5:9edec5ee8bf4 | 560 | /* |
clemente | 5:9edec5ee8bf4 | 561 | * dt[0] = Bits 4-11 of 16-bit real-time temperature sample. (b7-b0) |
clemente | 5:9edec5ee8bf4 | 562 | * dt[1] = Bits 0-3 of 16-bit real-time temperature sample. (b7-b4) |
clemente | 5:9edec5ee8bf4 | 563 | */ |
clemente | 6:03c24251e500 | 564 | |
clemente | 6:03c24251e500 | 565 | // Check for Temp value ready |
clemente | 6:03c24251e500 | 566 | if ( isDataAvailable() & TDR_STATUS) { |
clemente | 6:03c24251e500 | 567 | readRegs( REG_TEMP_MSB, &dt[0], 2); |
clemente | 6:03c24251e500 | 568 | return 1; |
clemente | 6:03c24251e500 | 569 | } else |
clemente | 6:03c24251e500 | 570 | return 0; |
clemente | 5:9edec5ee8bf4 | 571 | } |
clemente | 5:9edec5ee8bf4 | 572 | |
clemente | 8:89ed6aeb5dbb | 573 | void MPL3115A2::SetPressureOffset( char offset) |
clemente | 8:89ed6aeb5dbb | 574 | { |
clemente | 9:75a5960adf5c | 575 | unsigned char data [2] = {REG_OFF_P, offset}; |
clemente | 8:89ed6aeb5dbb | 576 | |
clemente | 8:89ed6aeb5dbb | 577 | Standby(); |
clemente | 8:89ed6aeb5dbb | 578 | writeRegs(data,2); |
clemente | 8:89ed6aeb5dbb | 579 | |
clemente | 8:89ed6aeb5dbb | 580 | Active(); |
clemente | 8:89ed6aeb5dbb | 581 | } |
clemente | 8:89ed6aeb5dbb | 582 | |
clemente | 8:89ed6aeb5dbb | 583 | void MPL3115A2::SetTemperatureOffset( char offset) |
clemente | 8:89ed6aeb5dbb | 584 | { |
clemente | 9:75a5960adf5c | 585 | unsigned char data [2] = {REG_OFF_T, offset}; |
clemente | 8:89ed6aeb5dbb | 586 | |
clemente | 8:89ed6aeb5dbb | 587 | Standby(); |
clemente | 8:89ed6aeb5dbb | 588 | writeRegs(data,2); |
clemente | 8:89ed6aeb5dbb | 589 | |
clemente | 8:89ed6aeb5dbb | 590 | Active(); |
clemente | 8:89ed6aeb5dbb | 591 | } |
clemente | 8:89ed6aeb5dbb | 592 | |
clemente | 8:89ed6aeb5dbb | 593 | void MPL3115A2::SetAltitudeOffset( char offset) |
clemente | 8:89ed6aeb5dbb | 594 | { |
clemente | 9:75a5960adf5c | 595 | unsigned char data [2] = {REG_OFF_H, offset}; |
clemente | 8:89ed6aeb5dbb | 596 | |
clemente | 8:89ed6aeb5dbb | 597 | Standby(); |
clemente | 8:89ed6aeb5dbb | 598 | writeRegs(data,2); |
clemente | 8:89ed6aeb5dbb | 599 | |
clemente | 8:89ed6aeb5dbb | 600 | Active(); |
clemente | 8:89ed6aeb5dbb | 601 | } |
clemente | 8:89ed6aeb5dbb | 602 | |
clemente | 0:cfecfabc5e23 | 603 | void MPL3115A2::readRegs(int addr, uint8_t * data, int len) { |
clemente | 0:cfecfabc5e23 | 604 | char t[1] = {addr}; |
clemente | 0:cfecfabc5e23 | 605 | m_i2c.write(m_addr, t, 1, true); |
clemente | 0:cfecfabc5e23 | 606 | m_i2c.read(m_addr, (char *)data, len); |
clemente | 0:cfecfabc5e23 | 607 | } |
clemente | 0:cfecfabc5e23 | 608 | |
clemente | 0:cfecfabc5e23 | 609 | void MPL3115A2::writeRegs(uint8_t * data, int len) { |
clemente | 0:cfecfabc5e23 | 610 | m_i2c.write(m_addr, (char *)data, len); |
clemente | 0:cfecfabc5e23 | 611 | } |